2.4b — natural causes of global climate change Flashcards
(4 cards)
1
Q
List
Natural causes of global climate change
A
- Solar variation due to sunspots
- Volcanic eruptions
2
Q
Define
What are sunspots?
A
Magnetic storms that occur on the sun’s surface, which impact earth’s insolation.
they’re said to have caused the little ice age in the northern hemisphere
3
Q
Explain
Why are volcanic eruptions harmful?
A
They release greenhouse gases such as sulphur dioxide.
4
Q
Explain
Why is sulphur dioxide harmful?
A
It enters the stratosphere to form sulfuric acid droplets, which skews the heat budget and reflects some incoming insolation back into space.
